Senior .NET Developer

Sigma Software · Bucharest, Bucharest, Romania

ExclusiveFull-timeSeniorPublished Jun 4, 2026

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About the role

  • Design, build, and deliver features and projects across C#, .NET Core, and Angular stack
  • Write clean, maintainable, and well-tested code (unit/integration/e2e)
  • Take ownership of features from requirements breakdown to deployment
  • Deploy and monitor services in AWS cloud-native environments
  • Handle production issues and incidents with accountability
  • Collaborate with Product, Design, and Engineering teams in Agile practices
  • Contribute to continuous improvement of systems and processes
  • 5+ years of experience in software development with strong OOP and system design skills
  • Solid hands-on experience with .NET (C#) and Angular
  • Understanding of software testing concepts and practices
  • Expertise in cloud-native and DevOps practices (CI/CD, automation, monitoring)
  • Experience with relational and NoSQL databases
  • Knowledge of non-functional requirements (performance, security, availability)
  • Proven experience in FinTech, payments, banking, or regulated financial environments
  • Upper-Intermediate English level or higher

WILL BE A PLUS

  • Experience with Docker/Kubernetes
  • Familiarity with event-driven architectures (Kafka, RabbitMQ)
  • Proficiency with observability tools (Datadog or similar)
  • Knowledge of domain-driven design (DDD) and complex domain modeling

PERSONAL PROFILE

  • Growth mindset, curiosity, and proactivity
  • Strong problem-solving skills balancing complexity and simplicity
  • Feedback-oriented, open to giving and receiving constructive input
  • Ownership & accountability in delivering commitments
  • Team player with strong collaboration skills
  • Adaptability to changing priorities
  • Excellent communication skills across disciplines

Skills

  • C#
  • .NET
  • Angular
  • SQL
  • Docker
  • Kubernetes
  • AWS
  • GitHub Actions
  • Datadog
  • Kafka

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